CVE catalog
CVE-2026-44742
Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.
- Severity
- High · CVSS 7.2
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 25, 2026
Postorius through 1.3.13 does not escape HTML in the message subject when rendering it in the Held messages pop-up, as exploited in the wild in May 2026.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | postorius | sid | 1.3.13-3 | vulnerable |
| Debian | postorius | forky | 1.3.13-3 | vulnerable |
| Debian | postorius | trixie | 1.3.13-1+deb13u1 | fixed |
| Debian | postorius | trixie-security | 1.3.13-1+deb13u1 | fixed |
| Debian | postorius | bookworm | 1.3.8-3+deb12u1 | fixed |
| Debian | postorius | bookworm-security | 1.3.8-3+deb12u1 | fixed |
| Cpe | postorius | Not reported | 1.3.10-1ubuntu0.1~esm1 | fixed |
| Cpe | python3-django-postorius | Not reported | 1.3.10-1ubuntu0.1~esm1 | fixed |
| Cpe | postorius | Not reported | Not reported | unknown |
| Opensuse | python-postorius | tumbleweed | 1.3.13-8.1 | fixed |
| Ubuntu | postorius | pro | 1.3.8-3 | vulnerable |
| Ubuntu | postorius | pro | 1.3.10-1 | vulnerable |
| Ubuntu | postorius | pro | 1.3.10-1ubuntu0.1~esm1 | fixed |
| Ubuntu | postorius | 25.10 | 1.3.13-1 | vulnerable |
| Ubuntu | postorius | 25.10 | 1.3.13-1ubuntu1 | vulnerable |
| Ubuntu | postorius | 25.10 | 1.3.13-1ubuntu1.1~25.10.1 | fixed |
| Ubuntu | postorius | 26.04 | 1.3.13-1ubuntu1 | vulnerable |
| Ubuntu | postorius | 26.04 | 1.3.13-1ubuntu1.1~26.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | postorius | source | sid | (unfixed) | not yet assigned | Not reported | [1136003] |
| Debian | postorius | source | forky | (unfixed) | not yet assigned | Not reported | [1136003] |
| Debian | postorius | source | trixie | 1.3.13-1+deb13u1 | not yet assigned | Not reported | [1136003] |
| Debian | postorius | source | bookworm | 1.3.8-3+deb12u1 | not yet assigned | Not reported | [1136003] |
| Cpe | postorius | cpe | Not reported | 1.3.10-1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Cpe | python3-django-postorius | cpe | Not reported | 1.3.10-1ubuntu0.1~esm1 | Not reported | Not reported | Not reported |
| Opensuse | python-postorius | rpm | tumbleweed | 1.3.13-8.1 | Not reported | OPENSUSE-SU-2026:11539-1 | Not reported |
| Ubuntu | postorius | deb | pro | 1.3.10-1ubuntu0.1~esm1 | Not reported | USN-8323-1 | Not reported |
| Ubuntu | postorius | deb | 25.10 | 1.3.13-1ubuntu1.1~25.10.1 | Not reported | USN-8323-1 | Not reported |
| Ubuntu | postorius | deb | 26.04 | 1.3.13-1ubuntu1.1~26.04.1 | Not reported | USN-8323-1 | Not reported |
OpenFactory catalog packages
[openSUSE Tumbleweed]
- [postorius]Unknown
Source package: [python-postorius]
Details (1)
1.3.13-8.1· noarch · tumbleweedUnknown · Fixed:
1.3.13-8.1Version impact unknown
nvd · python-postorius · opensuse · tumbleweed
- [postorius-web]Unknown
Source package: [python-postorius]
Details (1)
1.3.13-8.1· noarch · tumbleweedUnknown · Fixed:
1.3.13-8.1Version impact unknown
nvd · python-postorius · opensuse · tumbleweed
- [postorius-web-uwsgi]Unknown
Source package: [python-postorius]
Details (1)
1.3.13-8.1· noarch · tumbleweedUnknown · Fixed:
1.3.13-8.1Version impact unknown
nvd · python-postorius · opensuse · tumbleweed
- [system-user-postorius]Unknown
Source package: [python-postorius]
Details (1)
1.3.13-8.1· noarch · tumbleweedUnknown · Fixed:
1.3.13-8.1Version impact unknown
nvd · python-postorius · opensuse · tumbleweed
[Debian 12 (Bookworm)]
- [python3-django-postorius]Fixed
Source package: [postorius]
Details (4)
1.3.8-3+deb12u1· all · bookwormFixed · Fixed:
1.3.8-3+deb12u1nvd · postorius · debian · bookworm; nvd · postorius · debian · 12
1.3.8-3+deb12u1· all · bookwormFixed · Fixed:
1.3.8-3+deb12u1nvd · postorius · debian · bookworm; nvd · postorius · debian · 12
1.3.8-3+deb12u1· all · bookworm-securityFixed · Fixed:
1.3.8-3+deb12u1nvd · postorius · debian · bookworm; nvd · postorius · debian · 12
1.3.8-3+deb12u1· all · bookworm-securityFixed · Fixed:
1.3.8-3+deb12u1nvd · postorius · debian · bookworm; nvd · postorius · debian · 12
[Debian 13 (Trixie)]
- [python3-django-postorius]Fixed
Source package: [postorius]
Details (4)
1.3.13-1+deb13u1· all · trixieFixed · Fixed:
1.3.13-1+deb13u1nvd · postorius · debian · 13
1.3.13-1+deb13u1· all · trixieFixed · Fixed:
1.3.13-1+deb13u1nvd · postorius · debian · 13
1.3.13-1+deb13u1· all · trixie-securityFixed · Fixed:
1.3.13-1+deb13u1nvd · postorius · debian · 13
1.3.13-1+deb13u1· all · trixie-securityFixed · Fixed:
1.3.13-1+deb13u1nvd · postorius · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11539-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-44742]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-44742]
- [https://osv.dev/vulnerability/USN-8323-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11539-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-44742]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44742.json]
- [https://ubuntu.com/security/notices/USN-8323-1]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]